Two years ago, William Gastle was shocked at how little public information there was about preparing for a possible bird flu pandemic that could kill millions of people, and cripple global economies. So the chief executive officer of Microbix Biosystems Inc. began putting together his own plan to protect not only his biotechnology company and its customers, but also the health and well-being of nearly 50 employees if an outbreak forces them to work at home or care for their families.